Brochure
Page 10
Job/Customer ___________________________________________ Date _________________________ Contractor ______________________________________
Model Specifi ed __________________________________________ Qty __________________________ Approved By_____________________________________
Designer/Engineer _______________________________________ Date _________________________ Contractor’s PO# ________________________________
Submitted by ____________________________________________ Date _________________________ Other ___________________________________________
THIS SPACE FOR DESIGNER / ENGINEER APPROVAL
The Isolator
®
E-X-P E2
™
Tankless Water Heater Service Valve Kits
Hot & Cold Set of Full Port Forged Brass Ball Valves w/ Hi-Flow Hose Drains & Pressure Relief Valve Outlet
Includes Residential or Commercial Pressure Relief Valve
4444 Series -
IPS Union × IPS
5444 Series -
IPS Union × SWT
500 WOG
Patented
Technology
TEMP °F PSI
100 500
150 408
180 398
TEMP °F PSI
100 500
150 408
180 398
4444 Series - IPS Union × IPS
5444 Series - IPS Union × SWT
ITEM # SIZE CTN/CASE A B C D E F G
RESIDENTIAL PRESSURE RELIEF VALVE (150 PSI/200,000 BTU)
44443PR 3/4 1/10 3/4 4 1/4 1 5/8 2 5/8 2 3/4 3/4 1/2
44444PR 1 1/10 1 5 2 3/8 2 3/8 2 3/4 3/4 3/4
RESIDENTIAL PRESSURE RELIEF VALVE (30 PSI/200,000 BTU)
44443PR3 3/4 1/10 3/4 4 1/4 1 5/8 2 5/8 2 3/4 3/4 1/2
COMMERCIAL PRESSURE RELIEF VALVE (150 PSI/2,703,000 BTU) & 3⁄4" CLOSE NIPPLE
44443PR2 3/4 1/6 3/4 4 1/4 1 5/8 2 5/8 2 3/4 3/4 1/2
44444PR2 1 1/6 1 5 2 3/8 2 3/8 2 3/4 3/4 3/4
NO. DESCRIPTION MATERIAL
1BODY BRASS
2SEATS PTFE
3BALL BRASS HCP
4 HANDLE NUT STAINLESS STEEL
5 HANDLE STEEL CP
6HANDLE JACKETVINYL
7PACKING GLANDBRASS
8STEM SEAL PTFE
9 STEM BRASS
10 END CAP BRASS
11 UNION NUT BRASS
12 RETAINING RING STAINLESS STEEL
13 UNION FITTING BRASS
14 WASHER EPDM
15 DRAIN VALVE
HANDLE
ENAMEL COATED
ALUMINUM
16 DRAIN VALVE
HANDLE SCREW
BRASS
17 CAP & STRAP BRASS W/ EPDM
HOSE WASHER
ITEM # SIZE CTN/CASE A B C D E F G
RESIDENTIAL PRESSURE RELIEF VALVE (150 PSI/200,000 BTU)
54443PR 3/4 1/10 3/4 4 3/4 1 5/8 2 5/8 2 3/4 3/4 1/2
54444PR 1 1/10 1 5 1/8 2 3/8 2 3/8 2 3/4 3/4 3/4
RESIDENTIAL PRESSURE RELIEF VALVE (30 PSI/200,000 BTU)
54443PR3 3/4 1/10 3/4 4 3/4 1 5/8 2 5/8 2 3/4 3/4 1/2
COMMERCIAL PRESSURE RELIEF VALVE (150 PSI/2,703,000 BTU) & 3⁄4" CLOSE NIPPLE
54443PR2 3/4 1/6 3/4 4 3/4 1 5/8 2 5/8 2 3/4 3/4 1/2
54444PR2 1 1/6 1 5 1/8 2 3/8 2 3/8 2 3/4 3/4 3/4
B
E
GF
A
CC
D
A
D
2
3
14
13
12
11
8
7
9
4
5
6
1
16
15
17
2
10
RESIDENTIAL PRESSURE RELIEF VALVE
AVAILABLE IN 30 PSI OR
150 PSI 200,000 BTU
COMMERCIAL PRESSURE RELIEF VALVE
(150 PSI/2,703,000 BTU)
& 3⁄4" CLOSE NIPPLE
F
F
F
F
Speci cations: Designed for residential or commercial use with potable water. This approved Webstone valve
is actuated by a blowout proof stem and features an adjustable packing gland. Threaded ends comply with
ANSI B1.20.1. Solder joint temperature ratings are per ASME B16.18 Annex A for 95-5 solder. Other solder
materials have lower pressure/temperature limits. Do not silver braze or overheat valves when soldering.
DRAIN HOT COLD